# How to configure beam characteristics such as filtration

**URL:** https://discourse.itk.org/t/how-to-configure-beam-characteristics-such-as-filtration/2969
**Category:** Beginner Questions
**Tags:** itkv5, rtk
**Created:** [April 18, 2020, 6:09pm UTC](https://discourse.itk.org/t/how-to-configure-beam-characteristics-such-as-filtration/2969 "2020-04-18T18:09:30Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![isuruwi](https://discourse.itk.org/letter_avatar_proxy/v4/letter/i/c0e974/32.png) [@isuruwi](https://discourse.itk.org/u/isuruwi)
#### Post date: [April 18, 2020, 6:09pm UTC](https://discourse.itk.org/t/how-to-configure-beam-characteristics-such-as-filtration/2969/1 "2020-04-18T18:09:30Z")

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I’m currently working on generating DRR image from 3D CT volumes.  
Is there a way to configure beam characteristics such as filtration ?  
That is for an example we use a 120kVp beam, and the filtration is given as 16.25mmAl at 120kVp. Does ITK or RTK versions has two parameters to keep these two values (120 kVp and 16.25mmAl)

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### Author: ![dzenanz](https://discourse.itk.org/user_avatar/discourse.itk.org/dzenanz/32/1093_2.png) [@dzenanz](https://discourse.itk.org/u/dzenanz)
#### Post date: [April 20, 2020, 2:54pm UTC](https://discourse.itk.org/t/how-to-configure-beam-characteristics-such-as-filtration/2969/2 "2020-04-20T14:54:53Z")

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RTK has its own [mailing list](https://public.kitware.com/pipermail/rtk-users/). RTK specific questions are best posted there. @simon.rit occasionally answers RTK-related questions on this forum.

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### Author: ![simon.rit](https://discourse.itk.org/letter_avatar_proxy/v4/letter/s/f08c70/32.png) [@simon.rit](https://discourse.itk.org/u/simon.rit)
#### Post date: [April 20, 2020, 7:28pm UTC](https://discourse.itk.org/t/how-to-configure-beam-characteristics-such-as-filtration/2969/3 "2020-04-20T19:28:16Z")

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Thanks for forwarding the question @dzenanz. Question has been answered [here](https://public.kitware.com/pipermail/rtk-users/2020-April/010880.html) in the mean time.